It's often a loose or defective gas cap causing the trouble with Evap systems but that usually brings in a P0449. There's a leak in the vacuum circuit between the intake manifold and the fuel tank that causes P0449. A little background on the system: This code deals with the "Evap" code group. Evaporative Emissions. The engine vacuum is used to place a vacuum on your fuel tank to prevent the harmful fumes from being released into the atmosphere. Instead the fumes are run through the engine, being burned and after going through the catalytic converter are considered much less harmful to the environment. Also part of the system includes a vent valve and solenoid. The vent valve is responsible for helping control the level of vacuum in the tank. The solenoid is electronically controlled and used to also control the level of vacuum in the tank. There is a sensor in the tank that provides feedback as to the vacuum level. Any of these items being defective will bring in your code. Rock Auto offers a replacement solenoid for around 30 dollars. If you wish to avoid taking it in and want to try throwing parts at it, that's the easiest to try. It's called and "evap solenoid" It will be on top of your intake manifold, seen after removing the cover and have 2 wires going to it. I often see the plug have a red wire retainer on it. It will be plugged into a black cylinder shaped piece with 2 vacuum connections, one in and one out. There is a white clip on the connection. Push on one side of that white clip to release the vacuum connections. Best of luck.It's often a loose or defective gas cap causing the trouble with Evap systems but that usually brings in a P0449. There's a leak in the vacuum circuit between the intake manifold and the fuel tank that causes P0449. A little background on the system: This code deals with the "Evap" code group. Evaporative Emissions. The engine vacuum is used to place a vacuum on your fuel tank to prevent the harmful fumes from being released into the atmosphere. Instead the fumes are run through the engine, being burned and after going through the catalytic converter are considered much less harmful to the environment. Also part of the system includes a vent valve and solenoid. The vent valve is responsible for helping control the level of vacuum in the tank. The solenoid is electronically controlled and used to also control the level of vacuum in the tank. There is a sensor in the tank that provides feedback as to the vacuum level. Any of these items being defective will bring in your code. Rock Auto offers a replacement solenoid for around 30 dollars. If you wish to avoid taking it in and want to try throwing parts at it, that's the easiest to try. It's called and "evap solenoid" It will be on top of your intake manifold, seen after removing the cover and have 2 wires going to it. I often see the plug have a red wire retainer on it. It will be plugged into a black cylinder shaped piece with 2 vacuum connections, one in and one out. There is a white clip on the connection. Push on one side of that white clip to release the vacuum connections. Best of luck.

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The Engine light is a generic indicator that some component or part of a system is not functioning correctly; could be fuel, emissions, ignition, etc. Auto Zone or Advance Auto will scan the vehicle for trouble codes for free. These codes will indicate where the problem is.

The Service Engine soon light indicates that something is likely wrong with your emissions system. It could be any number of things but it is OK to drive to a repair shop or parts shop to get the codes read. Some of these issues can cause damage if you don't get the vehicle repaired soon but you can drive it a little bit (you won't need to get it towed).
I would recommend an Autozone or Pep Boys to get the code read as it may be something as simple as replacing the gas cap.

Ken,
You will want to take your car to your local Auto Zone or Advance auto and ask them to scan the car for trouble codes. They will do it for you at no charge and you will see what is causing the the service engine light to come on. You can write the codes down and respond back so we can start diagnosing.
Let me know what the codes are, good luck.
Regards,